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A234844
Number of inverse monoids of order n.
3
1, 2, 4, 11, 27, 89, 310, 1311, 6253, 34325, 212247, 1466180, 11167987, 92889294, 836021796
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..15.
Martin E. Malandro, Enumeration of finite inverse semigroups, arXiv:1312.7192 [math.CO]
CROSSREFS
Cf. A001428 (inverse semigroups), A234843 (commutative inverse semigroups), A234845 (commutative inverse monoids).
Sequence in context: A131482 A234845 A148131 * A205504 A290337 A099412
Adjacent sequences: A234841 A234842 A234843 * A234845 A234846 A234847
KEYWORD
nonn,hard,more
AUTHOR
Joerg Arndt, Dec 31 2013
STATUS
approved

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Last modified September 28 10:43 EDT 2024. Contains 376292 sequences.
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